The
electron configuration of Bromine or Br with z=35, we have to obtain 35e-. The
answer is furthered to:
1.
The
expanded electron configuration is 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p5.
2.
While
with the noble gas, which was extracted from Bromine’s expanded electron
configuration staring from 1s2 to 3p6. Please refer above. It is the electron
configuration of Argon, so we write [Ar] with the brackets then copy the
remaining, 4s2, 3d10, 4p5.
Hence, in simplified form is [Ar] 4s2, 3d10, 4p5.
